The arrival of Endeavour in Los Angeles last week has been described by many as the final note in the coda to NASA's shuttle program. To commemorate its end, we turned to the program's beginnings, where we discovered a stunning assortment of high resolution concept art. (If you've been hunting for a new background image for your desktop, consider your search over.)

We began our search at the San Diego Air & Space Museum's archive of public domain images, where Brain Picking's Maria Popova recently happened upon these awesome mockup diagram drawings of the interior of the space shuttle. The Museum's entire collection, which contains thousands of images, is worthy of perusal, but we found ourselves particular taken with this impressive set of Space Related Images, for it was there that we found an awe-inspiring assortment of concept illustrations and models from the Shuttle Program's infancy (including preliminary sketches for the 747 "piggyback" method of shuttle transport). We've included a sampling of the collection below, but we highly recommend checking out the full set.